btw, even

   12400/10 => 1239.9 ??
and
   12400*0.1 => 1239.9
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having stange results. But PLEASE don't tell me that I have to convert
those numbers into strings and re-formate them (like):

   s/(\d*)(\d\d)/$1.$2/
or
   $price = substring(..).'.'.substr(..)

(I asume that s/../../ is exactly doing this)
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Carl